As above, that size seems to be the only one not in my torx and lock screws set. cheers

That torx screw has a pin in side so you need a special bit for it not sure of its size sorry. If your changing the Maf You don't need to touch those torx screws . Cleaning a Maf has mixed results so I'd just buy a new one.

If desperate to remove use some long nose mole grip or pliars around it and remove. Or grind a line out of it for flat head screwdriver

DG

I picked up a set of Laser 5 point stars with security pin from my local Halfords.

As above 5 point security star bits ;-) i bought a set a few years ago... never been used :-(

Also called 5 point star tamperproof bits as pictured in the link below.

http://www.briskoda.net/forums/topic/227296-guide-changing-the-maf-sensor-on-fabia-19tdi/#entry2673151

I borrowed the tool to remove these stupid screws and replaced them with pozidrive head self-tappers. Idiot detail.

rotodiesel.

This is the sort of thing you need...

http://www.amazon.com/SE-pc-Security-Bit-Set/dp/B0009U6AB4

It's pretty much what I've got. Was a present from little bro.

I have a similar set, but in a blue plastic case. I think the cost was around £10 and it has been very useful for coping with a variety of security fasteners on various electric appliances and even toys.

Just found this at Maplins:

http://www.maplin.co.uk/33-piece-security-bit-set-11520

spot on cheers guys, il buy a set. looks like i might just change maf, although its just to see if my mpg goes up